20211202010999 has 16 divisors (see below), whose sum is σ = 20465184936000. Its totient is φ = 19959224795136.

The previous prime is 20211202010911. The next prime is 20211202011023. The reversal of 20211202010999 is 99901020211202.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20211202010999 - 2⁸ = 20211202010743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211202040999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16022567 + ... + 17237895.

It is an arithmetic number, because the mean of its divisors is an integer number (1279074058500).

Almost surely, 2^{20211202010999} is an apocalyptic number.

20211202010999 is a deficient number, since it is larger than the sum of its proper divisors (253982925001).

20211202010999 is a wasteful number, since it uses less digits than its factorization.

20211202010999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216154.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 20211202010999 in words is "twenty trillion, two hundred eleven billion, two hundred two million, ten thousand, nine hundred ninety-nine".